Home / 21,153.55-29,191.12-12,201.43

Finding the Fourth Proportional to 21,153.55, 29,191.12 and 12,201.43

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Solution

The fourth proportional to 21,153.55, 29,191.12 and 12,201.43 is: 16,837.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.55 : 29,191.12 = 12,201.43 : x
  2. Step 2: Convert to fraction form
    21,153.55/29,191.12 = 12,201.43/x
  3. Step 3: Cross multiply
    21,153.55x = 29,191.12 × 12,201.43
  4. Step 4: Simplify right side
    21,153.55x = 356,173,407.30
  5. Step 5: Solve for x
    x = 356,173,407.30/21,153.55
  6. Step 6: Final answer
    x = 16,837.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.